Love is a smoke raised with the fume of sighs,
Being purged, a fire sparkling in lovers’ eyes,
Being vexed, a sea nourished with lovers’ tears.
What is it else? A madness most discreet,
A choking gall and a preserving sweet.
—  William Shakespeare,  Romeo and Juliet Act 1, Scene 1

I’ll follow thee and make a heaven of hell,
To die upon the hand I love so well.
—  William Shakespeare,  A Midsummer Night’s Dream Act 2, Scene 1

For where thou art, there is the world itself, and where though art not, desolation.
—  William Shakespeare,  Henry VI Act 3, Scene 2

Who could refrain that had a heart to love and in that heart courage to make love known?
—  William Shakespeare,  Macbeth Act 2, Scene 3